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Picking Numbers

Author: Ismail Hosen

Daffodil International University





Problem Link

//Please follow from main function

#include<bits/stdc++.h>

using namespace std;

vector<int>arr;

int main()

{

    int n, sum;

    cin>>n;

    vector<int>num(n+5);

    for(int i=0; i<n; i++){

        int d;

        cin>>d;

        num[d]++;

    }

    for(int i=0; i<num.size()-1; i++){

        sum=num[i]+num[i+1];

        arr.push_back(sum);

    }

    sort(arr.begin(), arr.end(), greater<int>());

    cout<<arr[0]<<endl;

    return 0;

}




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